8 year-old boy with left-sided stomach ache, obvious pain on pressure in the left lower quadrant, the outer inguinal ring and spermatic cord inconspicuous, local pain on pressure of the left hemiscrotum.

Ultrasound 1: Depiction of the testicles and epididymis of both sides as a comparison. Obvious noticeable separation of the testicles and epididymis of the left side (and concurrent transversal, enlarged left testicle). Concomitant hydrocele.

Ultrasound 2: Color doppler shows vascularization in the epididymis but not in the testicle.